Before building staircases in the block area, I asked:
"What do you think about in order to build a staricase?"
Caleb: "They're like mountains. You have to think about going higher and higher."
Ruby: "You have to think about how to make it balance so it's strong."
Aliyah: "They're not flat. You have to make it a little big, then a little bigger."
Grace: "Up, up, up, up..."
Caleb: "... the stairs get higher."